CN107827293B - 一种海产品加工过程产生的高含盐有机废水的处理工艺 - Google Patents
一种海产品加工过程产生的高含盐有机废水的处理工艺 Download PDFInfo
- Publication number
- CN107827293B CN107827293B CN201711091389.5A CN201711091389A CN107827293B CN 107827293 B CN107827293 B CN 107827293B CN 201711091389 A CN201711091389 A CN 201711091389A CN 107827293 B CN107827293 B CN 107827293B
- Authority
- CN
- China
- Prior art keywords
- workshop section
- water
- sludge
- treatment
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000008569 process Effects 0.000 title claims abstract description 26
- 150000003839 salts Chemical class 0.000 title claims abstract description 9
- 239000010815 organic waste Substances 0.000 title claims abstract description 7
- 239000010802 sludge Substances 0.000 claims abstract description 35
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- 238000005903 acid hydrolysis reaction Methods 0.000 claims abstract description 19
- 230000001590 oxidative effect Effects 0.000 claims abstract description 19
- 238000006056 electrooxidation reaction Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 230000015271 coagulation Effects 0.000 claims abstract description 14
- 238000005345 coagulation Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 10
- 239000011790 ferrous sulphate Substances 0.000 claims description 9
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 9
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 9
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 8
- 229910001882 dioxygen Inorganic materials 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 239000000701 coagulant Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000007667 floating Methods 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000464 lead oxide Inorganic materials 0.000 claims description 2
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims 1
- 239000013505 freshwater Substances 0.000 abstract description 5
- 239000005416 organic matter Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000012028 Fenton's reagent Substances 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000012267 brine Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 235000014102 seafood Nutrition 0.000 description 5
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
本发明公开了一种海产品加工过程产生的高含盐有机废水的处理工艺，属于环保技术领域。本发明的处理工艺依次包含预处理工段、初次混凝工段、初次酸解氧化工段、二次混凝工段、电化学氧化工段、二次酸解氧化工段、压滤工段、污泥处理工段。本发明的方法通过芬顿试剂化学氧化和电化学氧化对废水进行分段处理，能对水体中的有机物进行有效降解，并通过絮凝剂和助沉剂形成絮体，对水中的有机物和固体进行卷扫吸附，使最终水体的色度、pH值、COD等指标符合排放要求。该工艺具有处理效率高、运行稳定、不占用淡水资源的特点。经本工艺处理后，含盐废水的pH、SS、COD等指标满足《污水排入城镇下水道水质标准》（GB/T 31962‑2015）的B级要求。
Description
技术领域
本发明涉及一种有机废水的处理工艺，特别涉及一种海产品加工过程产生的高含盐有机废水的处理工艺，属于环保技术领域。
背景技术
海产品营养丰富、口感良好，深受大众的喜爱。然而海鲜因为保质期短，在大量集中上市期间，如不能妥善保管，就会腐烂变质。通常海产品加工厂通过对海鲜进行加工处理使其更易于保存。但在海产品加工的过程中会产生大量的生产废水和清洗废水。生产废水中主要包含有鱼血液、组织碎屑及脂肪颗粒等物质，导致水体的色度、COD、BOD、SS和氨氮等指标严重超标。另外，海产品加工过程中为保证海鲜的风味常使用海水进行清洗，同时部分海产品采用腌制的方法进行加工，大量使用食盐，因此废水中氯化钠含量较高，通常在3~8g/L。
生化法是目前处理有机废水的主要方法，但是水体中含盐量高常导致厌氧/好氧菌脱水死亡，进而导致活性污泥失效，因此高含盐有机废水不宜采用生物法进行处理。采用大量淡水稀释废水再进行生化处理的方法，对沿海缺少淡水资源的地区来说，也是不可行的。此外，采用多效蒸发处理含盐废水时，结垢问题制约了装置的长期稳定运行，导致处理能力波动，难以满足需要。
发明内容
针对上述问题，本发明的目的是提供一种高效、稳定、不占用淡水资源的海产品加工过程中产生的高含盐有机废水的处理工艺，使沿海地区海鲜加工企业的废水能够达标排放。
为解决上述问题，本发明的处理工艺依次包含预处理工段、初次混凝工段、初次酸解氧化工段、二次混凝工段、电化学氧化工段、二次酸解氧化工段、压滤工段、污泥处理工段。
1）预处理工段：将海产品加工过程产生的废水混合，经隔油池去除漂浮物；
2）初次混凝工段：初沉池中，在搅拌下依次将絮凝剂、助沉剂加入，静置2~3小时，使絮体沉降，沉淀的污泥经污泥泵送至污泥浓缩池；
3）初次酸解氧化工段：初次混凝沉降后的水体进入带搅拌的酸解氧化罐，加入稀硫酸，调节水体pH值在2.0~4.0之间，分批加入硫酸亚铁和30%的双氧水，反应2~4小时后，再加入絮凝剂和助沉剂；
4）二次混凝工段：初次酸解氧化后的水体进入二沉池，使絮体沉降，沉降的污泥也用污泥泵送至污泥浓缩池，清液泵入电化学氧化池；
5）电化学氧化工段：在电化学氧化池，用稀硫酸调节水体pH值在3.0~5.5之间，电流密度控制在10~50mA/cm2，停留时间为12~36小时；
6）二次酸解氧化工段：电化学氧化处理后的水泵入二次酸解池，再次加入稀硫酸并调节pH值在3.0~5.0之间，分批加入硫酸亚铁和30%的双氧水，反应1~3小时后，加入氢氧化钙调节水体pH至6.5~9.5；
7）压滤工段：二次酸解氧化处理后的水经板式压滤机过滤，脱除水体残留的细小悬浮物，清水达标排放，固体滤渣外运；
8）污泥脱水工段：污泥浓缩池的污泥经脱水装置脱水，液体返回初次酸解氧化工段进行处理，固体污泥外运。
所述絮凝剂为聚合氯化铝、聚合氯化铝铁、碱式氯化铝、硫酸亚铁、硫酸铝、聚合硫酸铁、聚丙烯酰胺中的一种或几种。
所述助沉剂包括硅藻土、高岭土、活性白土中的一种或几种。
所述初次酸解氧化工段，水中Fe2+离子浓度控制在0.2~1g/L，30%的双氧水用量为10~30ml/L。
所述电化学氧化工段，正极采用钛基二氧化铅或掺杂钛基二氧化铅做电极，负极采用金属钛网或石墨做电极。
所述二次酸解氧化工段，水中Fe2+离子浓度控制在0.2~0.7g/L，30%的双氧水用量为5~20ml/L。
所述污泥脱水工段中的脱水装置为板式压滤机或卧式螺旋离心机。
本发明的方法，通过芬顿试剂化学氧化和电化学氧化对废水进行分段处理，能对水体中的有机物进行有效降解，并通过絮凝剂和助沉剂形成絮体，对水中的有机物和固体进行卷扫吸附，使最终水体的色度、pH值、COD等指标符合排放要求。该工艺具有处理效率高、运行稳定、不占用淡水资源的特点。
附图说明
图1是本发明的流程示意图。
具体实施方式
下面结合附图和具体实施例对本发明进一步详细说明。
实施例1：
1）预处理工段：将山东某水产加工企业产生的生产废水和清洗废水汇集，进入预处理工段，在隔油池中去除水体上漂浮的油脂；2）初次混凝工段：在初沉池，依次加入絮凝剂阴离子型聚丙烯酰胺和助沉剂硅藻土，开启搅拌，净水材料产生大量絮体对水中悬浮物进行卷扫沉降，沉降后的污泥用泵抽至污泥浓缩池；3）初次酸解氧化工段：初次絮凝后的水体打入初次酸解氧化罐，加入10%的稀硫酸调节pH值至2.0，再加入硫酸亚铁和双氧水，水中Fe2+离子浓度控制在0.5g/L，30%的双氧水用量为15ml/L，反应2.5小时后，再次加入聚合氯化铝、阴离子型聚丙烯酰胺和硅藻土，搅拌均匀；4）二次混凝工段：初次酸解氧化后的水体打入二沉池进行沉降，产生的絮体沉降后抽至污泥浓缩池，清水进入电化学氧化池；5）电化学氧化工段：在电化学氧化池，以钛基二氧化铅丝网为正极，石墨为负极，通电对水体有机物进行氧化，电流密度控制在20mA/cm2，停留时间24小时，期间水体pH值控制在5.0左右；6）二次酸解氧化工段：将水体泵入二次酸解氧化池，加入10%稀硫酸调节pH值至4.0，再加入硫酸亚铁和双氧水，水中Fe2+离子浓度控制在0.5g/L，30%的双氧水用量为20ml/L，反应1小时后，加入氢氧化钙调节水体pH值至7.0；7）压滤工段：此时水体中还有大量细微悬浮物，经板式压滤机过滤，清水达标排放；8）污泥脱水工段：污泥浓缩池的污泥经板式压滤机脱水，滤液返回初次酸解氧化池，固体滤渣外运进一步处理。
处理效果：水产加工废水原水水质情况见表1，废水外排执行标准见表2，该标准取自《污水排入城镇下水道水质标准》（GB/T 31962-2015）中B级要求。经本发明工艺处理后的水质结果见表3。
表1.废水原水水质情况
| 项目 | 色度 | pH值 | SS(mg/L) | CODcr(mg/L) | BOD5(mg/L) | NH3-N(mg/L) |
| 数值 | 200 | 5.0 | 1000 | 6000 | 4000 | 100 |
表2.海产品加工废水外排执行标准
| 项目 | 色度 | pH值 | SS(mg/L) | CODcr(mg/L) | BOD5(mg/L) | NH3-N(mg/L) |
| 数值 | 64 | 6.5~9.5 | ≤400 | ≤500 | ≤350 | ≤45 |
表3.经本发明工艺处理后的水质结果
| 项目 | 色度 | pH值 | SS(mg/L) | CODcr(mg/L) | BOD5(mg/L) | NH3-N(mg/L) |
| 数值 | 60 | 6.5 | 50 | 250 | 150 | 30 |
从表中可以看出，经本发明处理后的水体，色度、pH值、SS等指标均能满足《污水排入城镇下水道水质标准》（GB/T 31962-2015）中B级的要求。
实施例2：
1）预处理工段：将山东某水产加工企业产生的生产废水和清洗废水汇集，进入预处理工段，在隔油池中去除水体上漂浮的油脂；2）初次混凝工段：在初沉池，依次加入絮凝剂阴离子型聚丙烯酰胺、聚合氯化铝和助沉剂硅藻土，开启搅拌，净水材料产生大量絮体对水中悬浮物进行卷扫沉降，沉降后的污泥用泵抽至污泥浓缩池；3）初次酸解氧化工段：初次絮凝后的水体打入初次酸解氧化罐，加入10%的稀硫酸调节pH值至3.5，再加入硫酸亚铁和双氧水，水中Fe2+离子浓度控制在0.8g/L，30%的双氧水用量为15ml/L，反应2小时后，再次加入聚合氯化铝、阴离子型聚丙烯酰胺和硅藻土，搅拌均匀；4）二次混凝工段：初次酸解氧化后的水体打入二沉池进行沉降，产生的絮体沉降后抽至污泥浓缩池，清水进入电化学氧化池；5）电化学氧化工段：在电化学氧化池，以钛基二氧化铅丝网为正极，钛丝网为负极，通电对水体有机物进行氧化，电流密度控制在30mA/cm2，停留时间36小时，期间水体pH值控制在4.5左右；6）二次酸解氧化工段：将水体泵入二次酸解氧化池，加入10%稀硫酸调节pH值至4.0，再加入硫酸亚铁和双氧水，水中Fe2+离子浓度控制在0.2g/L，30%的双氧水用量为10ml/L，反应1小时后，加入氢氧化钙调节水体pH值至7.5；7）压滤工段：此时水体中还有大量细微悬浮物，经板式压滤机过滤，清水达标排放；8）污泥脱水工段：污泥浓缩池的污泥经卧式螺旋离心机脱水，液体返回初次酸解氧化池，固体滤渣外运进一步处理。
表4.经本发明工艺处理后的水质结果
| 项目 | 色度 | pH值 | SS(mg/L) | CODcr(mg/L) | BOD5(mg/L) | NH3-N(mg/L) |
| 数值 | 64 | 7.5 | 30 | 150 | 80 | 20 |
本实施例与实施例1采用方法近似，主要区别在于延长了水体在电化学氧化池的停留时间，最终出水的CODcr和BOD5较实施例1低。
最后应说明的是：以上仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (4)
1.一种海产品加工过程产生的高含盐有机废水的处理工艺，其特征在于，依次包含预处理工段、初次混凝工段、初次酸解氧化工段、二次混凝工段、电化学氧化工段、二次酸解氧化工段、压滤工段、污泥处理工段：
1）预处理工段：将海产品加工过程产生的废水混合，经隔油池去除漂浮物；
2）初次混凝工段：初沉池中，在搅拌下依次将絮凝剂、助沉剂加入，静置2~3小时，使絮体沉降，沉淀的污泥经污泥泵送至污泥浓缩池；
3）初次酸解氧化工段：初次混凝沉降后的水体进入带搅拌的酸解氧化罐，加入稀硫酸，调节水体pH值在2.0~4.0之间，分批加入硫酸亚铁和30%的双氧水，水中Fe2+离子浓度控制在0.2~1g/L，30%的双氧水用量为10~30ml/L，反应2~4小时后，再加入絮凝剂和助沉剂；
4）二次混凝工段：初次酸解氧化后的水体进入二沉池，使絮体沉降，沉降的污泥也用污泥泵送至污泥浓缩池，清液泵入电化学氧化池；
5）电化学氧化工段：在电化学氧化池，用稀硫酸调节水体pH值在3.0~5.5之间，正极采用钛基二氧化铅或掺杂钛基二氧化铅做电极，负极采用金属钛网或石墨做电极，电流密度控制在10~50mA/cm2，停留时间为12~36小时；
6）二次酸解氧化工段：电化学氧化处理后的水泵入二次酸解池，再次加入稀硫酸并调节pH值在3.0~5.0之间，分批加入硫酸亚铁和30%的双氧水，水中Fe2+离子浓度控制在0.2~0.7g/L，30%的双氧水用量为5~20ml/L，反应1~3小时后，加入氢氧化钙调节水体pH至6.5~9.5；
7）压滤工段：二次酸解氧化处理后的水经板式压滤机过滤，脱除水体残留的细小悬浮物，清水达标排放，固体滤渣外运；
8）污泥脱水工段：污泥浓缩池的污泥经脱水装置脱水，液体返回初次酸解氧化工段进行处理，固体污泥外运。
2.根据权利要求1所述的处理工艺，其特征在于所述的絮凝剂为聚合氯化铝、聚合氯化铝铁、碱式氯化铝、硫酸亚铁、硫酸铝、聚合硫酸铁、聚丙烯酰胺中的一种或几种。
3.根据权利要求1所述的处理工艺，其特征在于所述的助沉剂为硅藻土、高岭土、活性白土中的一种或几种。
4.根据权利要求1所述的处理工艺，其特征在于所述的污泥脱水工段中的脱水装置为板式压滤机或卧式螺旋离心机。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091389.5A CN107827293B (zh) | 2017-11-08 | 2017-11-08 | 一种海产品加工过程产生的高含盐有机废水的处理工艺 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091389.5A CN107827293B (zh) | 2017-11-08 | 2017-11-08 | 一种海产品加工过程产生的高含盐有机废水的处理工艺 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107827293A CN107827293A (zh) | 2018-03-23 |
| CN107827293B true CN107827293B (zh) | 2018-09-28 |
Family
ID=61653895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711091389.5A Expired - Fee Related CN107827293B (zh) | 2017-11-08 | 2017-11-08 | 一种海产品加工过程产生的高含盐有机废水的处理工艺 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107827293B (zh) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108947006A (zh) * | 2018-07-20 | 2018-12-07 | 江苏力祺环保科技有限公司 | 一种污水处理方法 |
| CN109588350A (zh) * | 2018-10-31 | 2019-04-09 | 湖南百浮腾生态农业发展有限公司 | 一种南美白对虾工厂化淡化循环养殖方法 |
| CN111333247B (zh) * | 2020-05-18 | 2020-08-11 | 山东曲记生物科技有限公司 | 海蜇加工废水处理装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101402499B (zh) * | 2008-10-23 | 2011-03-23 | 杭州水处理技术研究开发中心有限公司 | 一种对海产品加工过程中产生的废弃液浓缩的方法 |
| CN101503261B (zh) * | 2008-11-06 | 2011-06-15 | 杭州水处理技术研究开发中心有限公司 | 一种海产品加工废水深度处理回用的工艺 |
| CN103803752B (zh) * | 2012-11-06 | 2015-03-11 | 中国石油化工股份有限公司 | 一种高盐高有机物废水的处理方法 |
| CN203411443U (zh) * | 2013-09-03 | 2014-01-29 | 宁波清天地环境工程有限公司 | 海产品加工废水处理装置 |
| CN104230087B (zh) * | 2014-09-30 | 2016-06-01 | 东莞市英硫净水服务有限公司 | 一种高盐水的淡化处理方法 |
| CN104773888A (zh) * | 2015-04-23 | 2015-07-15 | 东南大学 | 铁碳内电解-Fenton氧化-电解电催化氧化法联合处理废水的方法及装置 |
-
2017
- 2017-11-08 CN CN201711091389.5A patent/CN107827293B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107827293A (zh) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Emamjomeh et al. | Review of pollutants removed by electrocoagulation and electrocoagulation/flotation processes | |
| Meas et al. | Industrial wastewaters treated by electrocoagulation | |
| CN102701496A (zh) | 一种用于处理高浓度难降解有机废水的方法与工艺 | |
| CN107337301B (zh) | 一种外加过氧化氢的电芬顿处理废水的方法 | |
| CN107827293B (zh) | 一种海产品加工过程产生的高含盐有机废水的处理工艺 | |
| CN206014571U (zh) | 一种pcb厂含镍废液的处理成套设备 | |
| JP5498477B2 (ja) | 活性金属塩凝集剤及びその製造方法 | |
| CN107540135A (zh) | 一种安全高效的垃圾渗滤液纳滤浓缩液处理组合工艺 | |
| CN108218129A (zh) | 化学镀镍废水的处理方法 | |
| CN114212862A (zh) | 一种电絮凝氧化一体化废水处理装置及处理方法 | |
| Ahmad et al. | Comparison of coagulation, electrocoagulation and biological techniques for the municipal wastewater treatment | |
| JP2024046632A (ja) | リン回収装置及びリン回収方法 | |
| KR100372849B1 (ko) | 응집 및 전해원리를 이용한 고도 폐수처리장치 | |
| CN107216006B (zh) | 一种皮革废水处理系统及方法 | |
| CN210855619U (zh) | 一种含盐有机废水电催化氧化耦合预处理装置 | |
| CN106966469A (zh) | 一种含硫酸根废水的处理方法 | |
| CN207512055U (zh) | 一种污泥处理系统 | |
| CN105967458A (zh) | 一种大豆油生产中的污水处理方法 | |
| JP2003112198A (ja) | 水中のｃｏｄ成分の除去方法及び除去装置 | |
| JPS63162100A (ja) | 汚泥の電解処理方法 | |
| JP4099369B2 (ja) | 排水処理装置 | |
| Robinson | Electroflocculation in the treatment of polluted water | |
| CN109626724A (zh) | 一种纺织废水处理回用工艺 | |
| Dostiyev et al. | A comparative investigation of chemical coagulation and electrocoagulation for the post-treatment of confectionery wastewater | |
| KR20150002977A (ko) | 전기응집을 통한 숙면제조 공정용수의 처리 시스템 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190801 Address after: 266000 Room B510, 5th floor, Building C, 80 Ningxia Road, North District, Qingdao City, Shandong Province Patentee after: Qingdao Qinlu Huanya Environmental Technology Co.,Ltd. Address before: 266061 Class 17, Senior 2, Qingdao No. 2 Middle School, 70 Songling Road, Laoshan District, Qingdao City, Shandong Province Patentee before: Wu Lijie |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 |